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Quantum Dots Deliver Vaccines, Encode Vaccination History in the Skin

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CAMBRIDGE, Mass., Jan. 7, 2020 — Using fluorescent quantum dots, an MIT research team has created a way to administer vaccinations and record a patient’s vaccination history in the skin. The researchers developed a microneedle platform that can selectively deliver microparticles into the skin in various patterns, which remain invisible to the naked eye but can be detected in the infrared (IR) using a smartphone that has the IR filter removed. The microparticles contain quantum dots, which store the person’s vaccination history in a pattern of dye that is delivered under the skin at the same time as the vaccine....Read full article

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    Published: January 2020
    Glossary
    quantum dots
    A quantum dot is a nanoscale semiconductor structure, typically composed of materials like cadmium selenide or indium arsenide, that exhibits unique quantum mechanical properties. These properties arise from the confinement of electrons within the dot, leading to discrete energy levels, or "quantization" of energy, similar to the behavior of individual atoms or molecules. Quantum dots have a size on the order of a few nanometers and can emit or absorb photons (light) with precise wavelengths,...
    Research & TechnologyeducationAmericasMITLight SourcesMaterialsSensors & Detectorsbiosensorsquantum dotsfluorescent dyeBiophotonicsPoint-of-careVaccinationsmedicalmedicinemedical care in low-resource settingsmedical recordkeeping

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